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Yecoraite

Big Photo

Mun. de Yécora, Sonora, Mexico
© 2005 M. Kampf

Show Yecoraite Photos (3)
Formula:
Fe
3+
3
(BiO)
 
5
(Te
4+
 
O
 
3
)(Te
6+
 
O
 
6
)
 
2
 · 9H
 
2
O
Colour:Yellow, orange to brown, ...Hardness:3
Name:Named after its discovery locality, San Martin de Porres Mine, west of Yecora, Sonora, Mexico.
This page provides mineralogical data about Yecoraite.

Classification of Yecoraite

IMA status:Approved 1983
Strunz 8th edition ID:4/K.18-10
Nickel-Strunz 10th (pending) edition ID:7.DF.70

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations
Dana 8th edition ID:34.8.6.1

34 : SELENITES, TELLURITES AND SULFITES
8 : Compound Selenites, Tellurites and Sulfites
Hey's CIM Ref.:28.4.17

28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates
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Type Occurrence of Yecoraite

Type Locality:San Martín de Porres Mine, Yécora, Mun. de Yécora, Sonora, Mexico
Place of Conservation of Type Material:National History Museum, London 1984,479
Year of Discovery:1985
Geological Setting of type material:Oxidation product of tetradymite and pyrite.

Physical Properties of Yecoraite

Lustre:Resinous
Diaphaneity (Transparency):Semitransparent
Colour:Yellow, orange to brown, yellow-brown
Hardness (Mohs):3
Fracture:Conchoidal
Density (measured):5.59(11) g/cm3

Crystallography of Yecoraite

Morphology:Fibrous
Comment:Tetragonal or hexagonal

Optical Data of Yecoraite

Type:Uniaxial (+)
RI values: nω = 1.812 nε = 1.824
Maximum Birefringence:δ = 0.012

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High

Chemical Properties of Yecoraite

Formula:
Fe
3+
3
(BiO)
 
5
(Te
4+
 
O
 
3
)(Te
6+
 
O
 
6
)
 
2
 · 9H
 
2
O
Essential elements:Bi, Fe, H, O, Te
All elements listed in formula:Bi, Fe, H, O, Te

Relationship of Yecoraite to other Species

Related Minerals - Nickel-Strunz Grouping):
7.DF.05Uklonskovite
NaMg[F|SO
 
4
] · 2H
 
2
O
7.DF.10Kainite
KMg[Cl|SO
 
4
] · 3H
 
2
O
7.DF.15Natrochalcite
NaCu
 
2
[OH|(SO
 
4
)
 
2
] · 2H
 
2
O
7.DF.20Metasideronatrite
Na
 
4
Fe
 
2
(SO
 
4
)
 
4
(OH)
 
2
·2H
 
2
O
7.DF.20Sideronatrite
Na
 
2
Fe(SO
 
4
)
 
2
OH·3H
 
2
O
7.DF.25Despujolsite
Ca
 
3
Mn
4+
 
[(OH)
 
6
|(SO
 
4
)
 
2
] · 3H
 
2
O
7.DF.25Fleischerite
Pb
 
3
Ge[(OH)
 
6
|(SO
 
4
)
 
2
] · 3H
 
2
O
7.DF.25Schaurteite
Ca
 
3
Ge[(OH)
 
6
|(SO
 
4
)
 
2
] · 4H
 
2
O
7.DF.25Mallestigite
Pb
 
3
Sb
5+
 
[(OH)
 
6
|AsO
 
4
|SO
 
4
] · 3H
 
2
O
7.DF.30Slavíkite
NaMg
 
2
Fe
 
5
(SO
 
4
)
 
7
(OH)
 
6
·33H
 
2
O
7.DF.35Metavoltine
Na
 
6
K
 
2
FeFe
 
6
(SO
 
4
)
 
12
O
 
2
·18H
 
2
O
7.DF.40Lannonite
HCa
 
4
Mg
 
2
Al
 
4
(SO
 
4
)
 
8
F
 
9
·32H
 
2
O
7.DF.40Vlodavetsite
AlCa
 
2
[F
 
2
|Cl|(SO
 
4
)
 
2
] · 4H
 
2
O
7.DF.45Peretaite
Ca(SbO)
 
4
[(OH)|SO
 
4
]
 
2
 · 2H
 
2
O
7.DF.50Gordaite
NaZn[(OH)
 
6
|SO
 
4
|Cl] · 6H
 
2
O
7.DF.55Clairite
(NH
 
4
)
 
2
Fe
 
3
(SO
 
4
)
 
4
(OH)
 
3
·3H
 
2
O
7.DF.60Arzrunite
near Cu
 
4
Pb
 
2
SO
 
4
Cl
 
6
(OH)
 
4
·2H
 
2
O
7.DF.65Elyite
Pb
 
4
Cu(SO
 
4
)O
 
2
(OH)
 
4
·H
 
2
O
7.DF.75Riomarinaite
Bi(OH)(SO
 
4
) * H
 
2
O
Related Minerals - Hey's Index Grouping:
28.4.1Xocomecatlite
Cu
 
3
[(OH)
 
4
|TeO
 
4
]
28.4.2Carlfriesite
CaTe
 
3
O
 
8
28.4.3Yafsoanite
Ca
 
3
Zn
 
3
[TeO
 
6
]
 
2
28.4.4Tlalocite
Cu
 
10
Zn
 
6
(TeO
 
3
)(TeO
 
4
)
 
2
Cl(OH)
 
25
·27H
 
2
O
28.4.5Oboyerite
Pb
 
6
H
 
6
[(Te
4+
 
O
 
3
)
 
3
|(Te
6+
 
O
 
6
)
 
2
] · 2H
 
2
O
28.4.6Schieffelinite
Pb
 
8
(TeO
 
4
)
 
5
(SO
 
4
)
 
3
·8H
 
2
O
28.4.7Girdite
Pb
 
3
H
 
2
[Te
4+
 
O
 
3
|Te
6+
 
O
 
6
]
28.4.8Khinite
Cu
 
3
Pb[(OH)
 
6
|TeO
 
4
]
28.4.9Parakhinite
Cu
 
3
Pb[(OH)
 
6
|TeO
 
4
]
28.4.10Dugganite
Pb
 
3
Zn
 
3
(Te
6+
 
O
 
6
)(AsO
 
4
)
 
2
28.4.11Kuksite
Pb
 
3
Zn
 
3
TeO
 
6
(PO
 
4
)
 
2
28.4.12Cheremnykhite
Pb
 
3
Zn
 
3
TeO
 
6
(VO
 
4
)
 
2
28.4.13Tlapallite
H
 
6
(Ca,Pb)
 
2
(Cu,Zn)
 
3
SO
 
4
(TeO
 
3
)
 
4
TeO
 
6
28.4.14Montanite
Bi
 
2
[TeO
 
6
] · 2H
 
2
O
28.4.15Kuranakhite
PbMn
4+
 
Te
6+
 
O
 
6
28.4.16Cuzticite
Fe
3+
2
[TeO
 
6
] · 3H
 
2
O

Other Names for Yecoraite

Synonyms:
IMA1983-062
German names:
Yecorait
Spanish names:
Yecoraita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Yecoraite

Reference List:Bol. Sociedad Mexicana De Mineralogia.

Acta Crystallographica (1985): 1: 10-16.

American Mineralogist (1986): 71: 1547.

Internet Links for Yecoraite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Yecoraite in the Natural History Museum (London) online catalogue
  • Yecoraite details from Handbook of Mineralogy (PDF)
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    Localities for Yecoraite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Mexico
     
    • Sonora
      • Mun. de Yécora
        • Yécora
    		Bol.Soc. Mexicana de Mineral.(1985) 1, 10-16 ; Panczner (1987): 400.
    Sweden
     
    • Västerbotten
      • Sandfors
    		Pavel M. Kartashov data
    Mineral and/or Locality
    Google
     
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